US5266882A - Control device for an alternating current generator of a vehicle - Google Patents

Control device for an alternating current generator of a vehicle Download PDF

Info

Publication number
US5266882A
US5266882A US07/903,734 US90373492A US5266882A US 5266882 A US5266882 A US 5266882A US 90373492 A US90373492 A US 90373492A US 5266882 A US5266882 A US 5266882A
Authority
US
United States
Prior art keywords
voltage
current
resistance
generator
reference voltage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US07/903,734
Inventor
Mitsuharu Morishita
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Assigned to MITSUBISHI DENKI KABUSHIKI KAISHA reassignment MITSUBISHI DENKI KABUSHIKI KAISHA ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: MORISHITA, MITSUHARU
Application granted granted Critical
Publication of US5266882A publication Critical patent/US5266882A/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
    • H02P9/14—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/007188—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters
    • H02J7/007192—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/14—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle

Definitions

  • This invention relates to a control device for an alternating current generator of a vehicle, particularly for controlling the field current of an alternating current generator.
  • FIG. 2 is a circuit diagram showing the construction of a conventional control device for an alternating current generator of a vehicle.
  • reference numeral 1 designates an alternating current generator having an armature coil 101 in a star connection and a field coil 102, and 2, a three-phase full-wave bridge rectifier having three sets of diodes connected to the armature coil 101, a main rectified output terminal 201, an auxiliary rectified output terminal 202 and a grounded output terminal 203.
  • Reference numeral 3 designates a voltage regulator which controls an output voltage of the alternating current generator to a predetermined value by controlling the field current flowing in the field coil 102, 4, a battery charged by a rectified output of the alternating current generator, 5, a key switch, and 6, a charge display lamp.
  • Numerals 301 and 302 designate transistors connected in a Darlington pair which interrupt the field current of the generator, 303, a field discharge diode, and 304, a current detecting resistance inserted between the emitter of the transistor 301 and ground, and having a positive temperature coefficient.
  • Numerals 305 and 306 designate voltage dividing resistances for setting a reference voltage, and having a positive temperature coefficient, 307, a comparator for comparing the divided voltage with the potential across resistance 304, and 308, a resistance for initial excitation of which one end is connected to the base of the transistor 302, and the output terminals of the comparator 307 and a comparator 309.
  • Numerals 310 and 311 designate resistances which divide a reference voltage, and 312 and 313, resistances which divide the voltage of the battery 4.
  • the comparator 309 makes a comparison between these divided voltages.
  • Numeral 314 designates a resistance, 315 and 316, diodes, 317, a Zener diode, and 318, a transistor, which form a reference voltage based on the voltage of the battery 4.
  • One end of the field coil 102 of the alternating current generator 1 is connected to the collectors of the transistors 301 and 302, and the anode of the field discharge diode 303. The other end thereof is connected to the auxiliary rectified output terminal 202, the cathode of the field discharge diode 303, and the other end of the resistance 308, as well as to the positive pole of the battery 4 whose negative pole is grounded, through the charge display lamp 6 and the key switch 5.
  • the main rectified current output terminal 201 of the rectifier 2 is connected to the positive pole of the battery 4.
  • the emitter current of the transistor 301 which is correlated with the field current flowing in the field coil 102, that is, approximately equal to the field current, flows in the current detecting resistance 304. Therefore, a potential difference is generated across the resistance 304. This potential difference is compared with a junction point potential of the voltage dividing resistances 306 and 305 by the comparator 307.
  • the output of the comparator 307 becomes "L" level, which switches the transistors 302 and 301 to OFF, and cuts off the field current.
  • the output of the comparator 307 is reversed to the "H" level again, which switches the transistors 302 and 301 to ON again, and resumes the field current in the field coil 102.
  • the field current is controlled so that it is restricted to a predetermined value, and the output voltage of the alternating current generator is controlled to a predetermined value.
  • the alternating current signal generated by the alternating current generator 1 is rectified to a direct current by the rectifier 2, charges the battery 4 and activates the field coil 102.
  • the comparator 309 When the charged voltage of the battery 4 reaches a predetermined value or more, the comparator 309 outputs an "L" level, which switches the transistors 302 and 301 to OFF. Furthermore, the circuit composed of the zener diode 317, the transistor 318 and the like, operates to maintain constant the reference voltage based on the voltage of the battery 4.
  • the current detecting resistance 304 is provided with a low value of 10 to 100 m ⁇ to reduce the loss thereby.
  • a conductor resistance of Ag/Pd is utilized as an electrode material.
  • the voltage dividing resistances 305 and 306 forming a reference voltage for comparison have a positive temperature coefficient of about 200 PPM. Since the voltage dividing resistances 305 and 306 are provided on opposite sides of the voltage junction point, which compensates for any influence by temperature, the voltage detecting level does not vary with temperature.
  • the conductive material utilized as the temperature detecting resistance 304 has a positive temperature coefficient of about 500 PPM. Therefore, with an increase in temperature, the operating current value for the "L" level of the comparator 307 is decreased, and a negative temperature gradient is provided in a field current restricting value.
  • a control device for an alternating current generator of a vehicle having a storage battery which is charged by a rectified output of the generator, a current detecting resistance wherein current substantially equal to a field current flowing in a field coil of the generator, flows and which has a temperature coefficient, voltage setting means for setting a reference voltage for comparison, and a comparator for comparing the potential across the current detecting resistance with the reference voltage to restrict the field current of the generator by interrupting it, wherein the voltage setting means changes the reference voltage in accordance with temperature to compensate for the temperature gradient of the current detecting resistance.
  • the potential difference across the current detecting resistance is increased with an increase of temperature, and the reference voltage also increases such that the field current control is not influenced by temperature.
  • FIG. 1 is a circuit diagram showing an embodiment of a control device for an alternating generator of a vehicle according to the present invention.
  • FIG. 2 is a circuit diagram showing a conventional device.
  • FIG. 1 portions the same as or corresponding with those in the conventional example, are identified by the same reference numerals as in FIG. 2; and their explanation is omitted.
  • a semiconductor resistance 319 having a positive temperature coefficient of about 2000 PPM is connected in parallel to the voltage dividing resistance 305 on the lower or ground potential side (A thick film resistance is used in this example.).
  • the remaining construction is the same as that in FIG. 2, and its explanation is omitted.
  • the comparator 307 compares the potential difference across the current detecting shunt resistance 304, with the reference voltage formed by the voltage setting means composed of the parallel connected resistance 305 and the semiconductor resistance 319 and the series resistance 306, and outputs the comparison result to the base of the transistor 302.
  • the resistance value of the series/parallel circuit of the voltage dividing resistances 306 and 305 having a positive temperature coefficient of about 200 PPM and the semiconductor resistance 319 having the temperature coefficient of about 2000 PPM is designed to compensate for the increase of the potential drop across resistance 304 by a corresponding increase of the reference voltage for comparison. In this way, it becomes possible to compensate for the negative temperature gradient of the field current restricting value due to the temperature coefficient of about 500 PPM of the current detecting shunt resistance 304.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Eletrric Generators (AREA)
  • Control Of Charge By Means Of Generators (AREA)

Abstract

A control device for an alternating current generator of a vehicle, having a storage battery which is charged by a rectified output of the generator, a field current detecting resistance (304) having a positive temperature coefficient, a voltage divider (305, 306) for setting a reference voltage, and a comparator (307) for comparing the potential drop across the current detecting resistance with the reference voltage to thereby control the field current duty cycle. The voltage divider includes a compensating resistor (319) to change the reference voltage in accordance with temperature.

Description

BACKGROUND OF THE INVENTION
This invention relates to a control device for an alternating current generator of a vehicle, particularly for controlling the field current of an alternating current generator.
FIG. 2 is a circuit diagram showing the construction of a conventional control device for an alternating current generator of a vehicle. In FIG. 2, reference numeral 1 designates an alternating current generator having an armature coil 101 in a star connection and a field coil 102, and 2, a three-phase full-wave bridge rectifier having three sets of diodes connected to the armature coil 101, a main rectified output terminal 201, an auxiliary rectified output terminal 202 and a grounded output terminal 203.
Reference numeral 3 designates a voltage regulator which controls an output voltage of the alternating current generator to a predetermined value by controlling the field current flowing in the field coil 102, 4, a battery charged by a rectified output of the alternating current generator, 5, a key switch, and 6, a charge display lamp.
Numerals 301 and 302 designate transistors connected in a Darlington pair which interrupt the field current of the generator, 303, a field discharge diode, and 304, a current detecting resistance inserted between the emitter of the transistor 301 and ground, and having a positive temperature coefficient. Numerals 305 and 306 designate voltage dividing resistances for setting a reference voltage, and having a positive temperature coefficient, 307, a comparator for comparing the divided voltage with the potential across resistance 304, and 308, a resistance for initial excitation of which one end is connected to the base of the transistor 302, and the output terminals of the comparator 307 and a comparator 309.
Numerals 310 and 311 designate resistances which divide a reference voltage, and 312 and 313, resistances which divide the voltage of the battery 4. The comparator 309 makes a comparison between these divided voltages. Numeral 314 designates a resistance, 315 and 316, diodes, 317, a Zener diode, and 318, a transistor, which form a reference voltage based on the voltage of the battery 4.
One end of the field coil 102 of the alternating current generator 1 is connected to the collectors of the transistors 301 and 302, and the anode of the field discharge diode 303. The other end thereof is connected to the auxiliary rectified output terminal 202, the cathode of the field discharge diode 303, and the other end of the resistance 308, as well as to the positive pole of the battery 4 whose negative pole is grounded, through the charge display lamp 6 and the key switch 5. The main rectified current output terminal 201 of the rectifier 2 is connected to the positive pole of the battery 4.
Next, an operational explanation will be given, referring to FIG. 2. When the key switch 5 is switched to ON, base currents flow to the transistors 302 and 301 from the battery 4 through the key switch 5, the charge display lamp 6, and the resistance 308, successively. An initial excitation current flows in the field coil 102 when the transistors 302 and 301 are switched ON. When the alternating current generator 1 is driven by an engine, not shown, in this state, power generation starts.
When power is generated, the emitter current of the transistor 301 which is correlated with the field current flowing in the field coil 102, that is, approximately equal to the field current, flows in the current detecting resistance 304. Therefore, a potential difference is generated across the resistance 304. This potential difference is compared with a junction point potential of the voltage dividing resistances 306 and 305 by the comparator 307. When the potential difference becomes higher than the junction point potential due to an increase of the field current, the output of the comparator 307 becomes "L" level, which switches the transistors 302 and 301 to OFF, and cuts off the field current. When the transistors 301 and 302 are switched to OFF, the output of the comparator 307 is reversed to the "H" level again, which switches the transistors 302 and 301 to ON again, and resumes the field current in the field coil 102.
By repeating the above operation, the field current is controlled so that it is restricted to a predetermined value, and the output voltage of the alternating current generator is controlled to a predetermined value. The alternating current signal generated by the alternating current generator 1, is rectified to a direct current by the rectifier 2, charges the battery 4 and activates the field coil 102.
When the charged voltage of the battery 4 reaches a predetermined value or more, the comparator 309 outputs an "L" level, which switches the transistors 302 and 301 to OFF. Furthermore, the circuit composed of the zener diode 317, the transistor 318 and the like, operates to maintain constant the reference voltage based on the voltage of the battery 4.
In the conventional control device constructed as above, the current detecting resistance 304 is provided with a low value of 10 to 100 mΩ to reduce the loss thereby. In a hybrid IC, generally, a conductor resistance of Ag/Pd is utilized as an electrode material. On the other hand, the voltage dividing resistances 305 and 306 forming a reference voltage for comparison, have a positive temperature coefficient of about 200 PPM. Since the voltage dividing resistances 305 and 306 are provided on opposite sides of the voltage junction point, which compensates for any influence by temperature, the voltage detecting level does not vary with temperature. However, the conductive material utilized as the temperature detecting resistance 304, has a positive temperature coefficient of about 500 PPM. Therefore, with an increase in temperature, the operating current value for the "L" level of the comparator 307 is decreased, and a negative temperature gradient is provided in a field current restricting value.
SUMMARY OF THE INVENTION
It is an object of the present invention to solve the above problems by providing a control device for an alternating current generator of a vehicle capable of restricting the field current without being influenced by temperature.
According to an aspect of the invention, there is provided a control device for an alternating current generator of a vehicle, having a storage battery which is charged by a rectified output of the generator, a current detecting resistance wherein current substantially equal to a field current flowing in a field coil of the generator, flows and which has a temperature coefficient, voltage setting means for setting a reference voltage for comparison, and a comparator for comparing the potential across the current detecting resistance with the reference voltage to restrict the field current of the generator by interrupting it, wherein the voltage setting means changes the reference voltage in accordance with temperature to compensate for the temperature gradient of the current detecting resistance.
In the control device of this invention, the potential difference across the current detecting resistance is increased with an increase of temperature, and the reference voltage also increases such that the field current control is not influenced by temperature.
BRIEF DESCRIPTION OF THE DRAWINGS
In the drawings:
FIG. 1 is a circuit diagram showing an embodiment of a control device for an alternating generator of a vehicle according to the present invention; and
FIG. 2 is a circuit diagram showing a conventional device.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
In FIG. 1, portions the same as or corresponding with those in the conventional example, are identified by the same reference numerals as in FIG. 2; and their explanation is omitted. In the voltage dividing resistances 305 and 306 for setting the reference voltage for comparison, a semiconductor resistance 319 having a positive temperature coefficient of about 2000 PPM, is connected in parallel to the voltage dividing resistance 305 on the lower or ground potential side (A thick film resistance is used in this example.). The remaining construction is the same as that in FIG. 2, and its explanation is omitted.
Next, an explanation will be given of the operation of the embodiment referring to FIG. 1. The comparator 307 compares the potential difference across the current detecting shunt resistance 304, with the reference voltage formed by the voltage setting means composed of the parallel connected resistance 305 and the semiconductor resistance 319 and the series resistance 306, and outputs the comparison result to the base of the transistor 302.
With this arrangement, when a current flows in the current detecting shunt resistance 304, the voltage drop across it increases with an increase of temperature due to its positive temperature coefficient of about 500 PPM. Accordingly, the resistance value of the series/parallel circuit of the voltage dividing resistances 306 and 305 having a positive temperature coefficient of about 200 PPM and the semiconductor resistance 319 having the temperature coefficient of about 2000 PPM is designed to compensate for the increase of the potential drop across resistance 304 by a corresponding increase of the reference voltage for comparison. In this way, it becomes possible to compensate for the negative temperature gradient of the field current restricting value due to the temperature coefficient of about 500 PPM of the current detecting shunt resistance 304.

Claims (1)

I claim:
1. A control device for an alternating current generator of a vehicle, having a storage battery which is charged by a rectified output of the generator, comprising: a current detecting resistance (304) having a positive temperature coefficient and connected in series with a field coil of the generator for detecting a current flow therethrough, one end of the resistance being grounded, a voltage divider having first and second resistors (305, 306) connected in series between a power supply voltage and ground for providing a reference voltage at a junction thereof, a comparator (307) for comparing a voltage drop across the current detecting resistance with the reference voltage, and means responsive to the comparator output for interrupting the field current to control a duty ratio thereof, wherein the first and second resistors have equal positive temperature coefficients, and further comprising a third resistor (319) connected between the junction and ground, and having a positive temperature coefficient sufficiently greater than that of the first and second resistors such that a voltage at the junction changes with temperature in proportion to a temperature induced change in the voltage drop across the current detecting resistance.
US07/903,734 1991-07-18 1992-06-24 Control device for an alternating current generator of a vehicle Expired - Fee Related US5266882A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP3177900A JPH0530800A (en) 1991-07-18 1991-07-18 Equipment for controlling ac generator for vehicle
JP3-177900 1991-07-18

Publications (1)

Publication Number Publication Date
US5266882A true US5266882A (en) 1993-11-30

Family

ID=16039028

Family Applications (1)

Application Number Title Priority Date Filing Date
US07/903,734 Expired - Fee Related US5266882A (en) 1991-07-18 1992-06-24 Control device for an alternating current generator of a vehicle

Country Status (6)

Country Link
US (1) US5266882A (en)
EP (1) EP0524466B1 (en)
JP (1) JPH0530800A (en)
KR (1) KR950010665B1 (en)
DE (1) DE69206507T2 (en)
HK (1) HK1002243A1 (en)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5637985A (en) * 1991-12-25 1997-06-10 Mazda Motor Corporation Alternator control system
US5672955A (en) * 1995-07-07 1997-09-30 Minks; Floyd M. Alternator regulation of unbalanced currents with temperature compensation
US5966001A (en) * 1996-04-23 1999-10-12 Denso Corporation Voltage regulating system for vehicle including alternator
US6222349B1 (en) 1998-05-11 2001-04-24 Satcon Technology Corporation Temperature feedback control of alternator output power
US6329797B1 (en) * 1998-07-22 2001-12-11 Daimlerchrysler Ag Energy supply device for an electromagnetic valve control of an internal combustion engine
US6420855B2 (en) * 2000-06-19 2002-07-16 Denso Corporation Vehicular ac generator having voltage control unit
US20020149347A1 (en) * 2001-04-16 2002-10-17 Denso Corporation Battery charging system and vehicle generator control system
US20030042876A1 (en) * 2001-09-06 2003-03-06 Nissan Motor Co., Ltd. Protection of a generator without measuring temperature
US20040135374A1 (en) * 2002-12-24 2004-07-15 Denso Corporation Vehicle generator control system
US20050162135A1 (en) * 2004-01-26 2005-07-28 Wetherill Associates, Inc. Alternator system with temperature protected voltage regulator
US6943532B1 (en) * 2000-04-11 2005-09-13 Mitsubishi Denki Kabushiki Kaisha Voltage control apparatus for vehicle generator having a light emitting diode
US20070273205A1 (en) * 2006-05-22 2007-11-29 Denso Corporation Communication system for use in data communications between power generator and external unit
US20080164852A1 (en) * 2007-01-05 2008-07-10 Denso Corporation Power-generator control apparatus for addressing occurrence of voltage transient
US20090313494A1 (en) * 2008-06-13 2009-12-17 Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. Voltage detection device
CN112106267A (en) * 2018-05-17 2020-12-18 维洛西门子新能源汽车法国简式股份公司 Protection circuit for switch

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3905219B2 (en) * 1998-04-09 2007-04-18 トヨタ自動車株式会社 CHARGE CONTROL DEVICE, CONTROL METHOD, AND POWER OUTPUT DEVICE
US7106028B2 (en) 2002-11-26 2006-09-12 Mitsubishi Denki Kabushiki Kaisha Controller of A.C. generator for vehicles
JP4501866B2 (en) * 2006-02-16 2010-07-14 株式会社デンソー Vehicle generator
JP5720259B2 (en) * 2011-01-18 2015-05-20 トヨタ自動車株式会社 Current detection circuit
CN111200304B (en) * 2018-11-20 2022-04-08 北京小米移动软件有限公司 Temperature detection circuit, method and device of wireless charging coil and storage medium

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2420874A1 (en) * 1978-03-24 1979-10-19 Sev Marchal Regulator for low power vehicle alternator - includes temp. sensor in stator to effect temp. control of rotor excitation current
US4220908A (en) * 1977-07-02 1980-09-02 Lucas Industries Limited Automotive battery charging system
US4388587A (en) * 1981-12-17 1983-06-14 Motorola, Inc. Fixed frequency voltage regulator
US4388586A (en) * 1981-12-17 1983-06-14 Motorola, Inc. Fixed frequency voltage regulator
EP0081891A1 (en) * 1981-12-17 1983-06-22 Motorola, Inc. Fixed frequency voltage regulator
US4398140A (en) * 1979-09-18 1983-08-09 Mitsubishi Denki Kabushiki Kaisha Control apparatus for charging generator
DE3309447A1 (en) * 1982-03-16 1983-09-22 Mitsubishi Denki K.K., Tokyo CONTROL DEVICE FOR CONTROLLING THE OUTPUT SIGNAL OF A GENERATOR
US4496898A (en) * 1982-10-20 1985-01-29 Mitsubishi Denki Kabushiki Kaisha Vehicle A.C. generator with constant output power
US4584516A (en) * 1983-06-09 1986-04-22 Mitsubishi Denki Kabushiki Kaisha Charge display circuit
US4594631A (en) * 1983-06-28 1986-06-10 Mitsubishi Denki Kabushiki Kaisha Temperature protective circuit for a charging generator
GB2172416A (en) * 1985-03-13 1986-09-17 Sgs Microelettronica Spa Electronic voltage regulating device with compensation for thermal dissipation, particularly for alternators
US4629967A (en) * 1985-04-29 1986-12-16 General Motors Corporation Generator voltage regulator
US4739243A (en) * 1985-10-29 1988-04-19 Mitsubishi Denki Kabushiki Kaisha Startup period control device for vehicle generator
US4945299A (en) * 1988-07-07 1990-07-31 Mitsubishi Denki Kabushiki Kaisha Control apparatus for an a.c. generator for automobile
US4992722A (en) * 1988-03-26 1991-02-12 Nippondenso Co., Ltd. Charging control unit and method for motor vehicle

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58119795A (en) * 1982-10-04 1983-07-16 Hitachi Ltd Brushless motor
JPS59148537A (en) * 1983-02-10 1984-08-25 株式会社日立製作所 Voltage regulator for charging generator
JPS6139607A (en) * 1984-07-28 1986-02-25 Fujitsu Ltd Temperature compensating circuit

Patent Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4220908A (en) * 1977-07-02 1980-09-02 Lucas Industries Limited Automotive battery charging system
FR2420874A1 (en) * 1978-03-24 1979-10-19 Sev Marchal Regulator for low power vehicle alternator - includes temp. sensor in stator to effect temp. control of rotor excitation current
US4398140A (en) * 1979-09-18 1983-08-09 Mitsubishi Denki Kabushiki Kaisha Control apparatus for charging generator
US4388587A (en) * 1981-12-17 1983-06-14 Motorola, Inc. Fixed frequency voltage regulator
US4388586A (en) * 1981-12-17 1983-06-14 Motorola, Inc. Fixed frequency voltage regulator
EP0081891A1 (en) * 1981-12-17 1983-06-22 Motorola, Inc. Fixed frequency voltage regulator
DE3309447A1 (en) * 1982-03-16 1983-09-22 Mitsubishi Denki K.K., Tokyo CONTROL DEVICE FOR CONTROLLING THE OUTPUT SIGNAL OF A GENERATOR
US4435676A (en) * 1982-03-16 1984-03-06 Mitsubishi Denki Kabushiki Kaisha Regulator for controlling output from generator having ambient temperature override
US4496898A (en) * 1982-10-20 1985-01-29 Mitsubishi Denki Kabushiki Kaisha Vehicle A.C. generator with constant output power
US4584516A (en) * 1983-06-09 1986-04-22 Mitsubishi Denki Kabushiki Kaisha Charge display circuit
US4594631A (en) * 1983-06-28 1986-06-10 Mitsubishi Denki Kabushiki Kaisha Temperature protective circuit for a charging generator
GB2172416A (en) * 1985-03-13 1986-09-17 Sgs Microelettronica Spa Electronic voltage regulating device with compensation for thermal dissipation, particularly for alternators
US4694239A (en) * 1985-03-13 1987-09-15 Sgs Microelettronica S.P.A. Electronic voltage regulating device with compensation for thermal dissipation, particularly for alternators
US4629967A (en) * 1985-04-29 1986-12-16 General Motors Corporation Generator voltage regulator
US4739243A (en) * 1985-10-29 1988-04-19 Mitsubishi Denki Kabushiki Kaisha Startup period control device for vehicle generator
US4992722A (en) * 1988-03-26 1991-02-12 Nippondenso Co., Ltd. Charging control unit and method for motor vehicle
US4945299A (en) * 1988-07-07 1990-07-31 Mitsubishi Denki Kabushiki Kaisha Control apparatus for an a.c. generator for automobile

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5637985A (en) * 1991-12-25 1997-06-10 Mazda Motor Corporation Alternator control system
US5672955A (en) * 1995-07-07 1997-09-30 Minks; Floyd M. Alternator regulation of unbalanced currents with temperature compensation
US5966001A (en) * 1996-04-23 1999-10-12 Denso Corporation Voltage regulating system for vehicle including alternator
US6222349B1 (en) 1998-05-11 2001-04-24 Satcon Technology Corporation Temperature feedback control of alternator output power
US6329797B1 (en) * 1998-07-22 2001-12-11 Daimlerchrysler Ag Energy supply device for an electromagnetic valve control of an internal combustion engine
US6943532B1 (en) * 2000-04-11 2005-09-13 Mitsubishi Denki Kabushiki Kaisha Voltage control apparatus for vehicle generator having a light emitting diode
US6420855B2 (en) * 2000-06-19 2002-07-16 Denso Corporation Vehicular ac generator having voltage control unit
US20020149347A1 (en) * 2001-04-16 2002-10-17 Denso Corporation Battery charging system and vehicle generator control system
US6700353B2 (en) * 2001-04-16 2004-03-02 Denso Corporation Battery charging system and vehicle generator control system
US20030042876A1 (en) * 2001-09-06 2003-03-06 Nissan Motor Co., Ltd. Protection of a generator without measuring temperature
US7071658B2 (en) * 2001-09-06 2006-07-04 Nissan Motor Co., Ltd. Protection of a generator without measuring temperature
US20040135374A1 (en) * 2002-12-24 2004-07-15 Denso Corporation Vehicle generator control system
US7183749B2 (en) 2002-12-24 2007-02-27 Denso Corporation Vehicle generator control system
US20050162135A1 (en) * 2004-01-26 2005-07-28 Wetherill Associates, Inc. Alternator system with temperature protected voltage regulator
US6982545B2 (en) * 2004-01-26 2006-01-03 Wetherill Associates, Inc. Alternator system with temperature protected voltage regulator
US20070273205A1 (en) * 2006-05-22 2007-11-29 Denso Corporation Communication system for use in data communications between power generator and external unit
US20080164852A1 (en) * 2007-01-05 2008-07-10 Denso Corporation Power-generator control apparatus for addressing occurrence of voltage transient
US7705568B2 (en) * 2007-01-05 2010-04-27 Denso Corporation Power-generator control apparatus for addressing occurrence of voltage transient
US20090313494A1 (en) * 2008-06-13 2009-12-17 Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. Voltage detection device
US7928776B2 (en) * 2008-06-13 2011-04-19 Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. Voltage detection device
CN112106267A (en) * 2018-05-17 2020-12-18 维洛西门子新能源汽车法国简式股份公司 Protection circuit for switch
US11539358B2 (en) * 2018-05-17 2022-12-27 Valeo Siemens Eautomotive France Sas Circuit for protecting a switch
CN112106267B (en) * 2018-05-17 2023-10-27 维洛西门子新能源汽车法国简式股份公司 Protection circuit for switch, power system and power inverter

Also Published As

Publication number Publication date
DE69206507D1 (en) 1996-01-18
KR930003515A (en) 1993-02-24
HK1002243A1 (en) 1998-08-07
EP0524466B1 (en) 1995-12-06
DE69206507T2 (en) 1996-05-15
KR950010665B1 (en) 1995-09-21
JPH0530800A (en) 1993-02-05
EP0524466A2 (en) 1993-01-27
EP0524466A3 (en) 1993-05-12

Similar Documents

Publication Publication Date Title
US5266882A (en) Control device for an alternating current generator of a vehicle
PL182577B1 (en) Electronic switching off device with a built-in power supply unit
JPH0423491B2 (en)
US3942096A (en) Voltage regulating system
US4594631A (en) Temperature protective circuit for a charging generator
US5245267A (en) Indicating means in a double voltage motor vehicle electrical circuit
US4435676A (en) Regulator for controlling output from generator having ambient temperature override
US4118768A (en) Demand controlled preregulating rectifier circuit for power supplies
US4295087A (en) Charge indicator circuit for a battery charging system
EP0178395B1 (en) Voltage regulator for generator
US4286205A (en) Interface circuit for standard voltage regulators
EP0350077B1 (en) Control apparatus for an A.C. generator for automobile
US3491285A (en) Potential regulator circuit
US4382222A (en) Series regulated rectifier circuit for a battery charging system
JPH08294239A (en) Voltage adjustment circuit
US4570199A (en) Protection circuit for voltage regulator of vehicle mounted generator
US4755734A (en) Voltage regulator for vehicle mounted generator
US4146831A (en) Regulated rectifier for alternator-supplied battery charger
JPS5816019B2 (en) Denatsuchiyosouchi
US5376874A (en) Charging circuit for a lead-acid storage battery
EP0071366B1 (en) Lamp drive circuit
US5264779A (en) Apparatus for controlling AC generator in vehicle
US4910451A (en) Voltage regulator for generator of an automobile
US3668504A (en) Battery charging voltage regulator including safety circuit
JPH10136697A (en) Control equipment of generator for vehicle

Legal Events

Date Code Title Description
AS Assignment

Owner name: MITSUBISHI DENKI KABUSHIKI KAISHA, JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:MORISHITA, MITSUHARU;REEL/FRAME:006218/0100

Effective date: 19920608

FEPP Fee payment procedure

Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

FEPP Fee payment procedure

Free format text: PAYER NUMBER DE-ASSIGNED (ORIGINAL EVENT CODE: RMPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

FPAY Fee payment

Year of fee payment: 4

FPAY Fee payment

Year of fee payment: 8

REMI Maintenance fee reminder mailed
LAPS Lapse for failure to pay maintenance fees
STCH Information on status: patent discontinuation

Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362

FP Lapsed due to failure to pay maintenance fee

Effective date: 20051130